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Related Concept Videos

Second-Order Circuits01:17

Second-Order Circuits

3.2K
Integrating two fundamental energy storage elements in electrical circuits results in second-order circuits, encompassing RLC circuits and circuits with dual capacitors or inductors (RC and RL circuits). Second-order circuits are identified by second-order differential equations that link input and output signals.
Input signals typically originate from voltage or current sources, with the output often representing voltage across the capacitor and/or current through the inductor. For example, in...
3.2K
Switching of BJT01:22

Switching of BJT

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Switching behavior in Bipolar Junction Transistors (BJTs) is a fundamental aspect utilized in various electronic circuits, particularly for digital logic applications like switches and amplifiers. In a typical switching circuit, a BJT alternates between cut-off and saturation modes, corresponding to the "off" and "on" states, respectively, thus behaving like an ideal switch.
Cut-off Mode ("Off" State): In this state, both the emitter-base and collector-base junctions are...
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Voltage Doubler Circuit01:23

Voltage Doubler Circuit

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A voltage doubler circuit integrates two main components: a clamping section and a rectifier section. The clamping section consists of a capacitor (C1) and a diode (D1), whereas the rectifier section is equipped with another diode (D2) and capacitor (C2). This circuit produces an output voltage with twice the amplitude of the sinusoidal input voltage.
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Directional Relays01:25

Directional Relays

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Directional relays, essential for managing unidirectional fault currents, enhance the safety and efficiency of power systems. On power lines equipped with directional relays, faults downstream (to the right) of the current transformer typically cause the fault current to lag the bus voltage by approximately 90 degrees, known as the forward direction. In contrast, upstream (left-side) faults may result in the fault current leading the bus voltage by nearly 90 degrees, termed the reverse...
574
First-Order Circuits01:15

First-Order Circuits

3.3K
First-order electrical circuits, which comprise resistors and a single energy storage element - either a capacitor or an inductor, are fundamental to many electronic systems. These circuits are governed by a first-order differential equation that describes the relationship between input and output signals.
One common example of a first-order circuit is the RC (resistor-capacitor) circuit. These circuits are used in relaxation oscillators such as neon lamp oscillator circuits. When voltage is...
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Differential Relays01:20

Differential Relays

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Differential relays are used to protect generators, buses, and transformers by comparing electrical quantities at different points. When a fault occurs, the difference in current between the two points triggers the relay to operate, opening the circuit breaker. Under normal conditions, the current entering (i1) and leaving (i2) a generator are equal. When a fault occurs, however, these currents become unequal, and the difference current flows in the relay operating coil, causing the relay to...
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Related Experiment Video

Updated: Jan 15, 2026

Measuring Light-Switching Behavior Using an Occupancy and Light Data Logger
05:50

Measuring Light-Switching Behavior Using an Occupancy and Light Data Logger

Published on: January 16, 2020

6.2K

A light switch for a hidden order.

Zhiren He1, Guru Khalsa1

  • 1Department of Physics, University of North Texas, Denton, TX, USA.

Science (New York, N.Y.)
|October 9, 2025
PubMed
Summary

Circularly polarized light directly controls ferroaxiality. This finding offers new possibilities for manipulating materials with light.

Area of Science:

  • Physics
  • Materials Science

Background:

  • Ferroaxiality is a material property related to electric polarization.
  • Controlling ferroaxiality is crucial for advanced electronic devices.

Purpose of the Study:

  • To investigate the effect of circularly polarized light on ferroaxiality.
  • To establish a novel method for controlling ferroaxiality.

Main Methods:

  • Irradiation of materials with circularly polarized light.
  • Measurement of ferroaxiality using advanced techniques.

Main Results:

  • Circularly polarized light was demonstrated to directly control ferroaxiality.
  • The degree of control depends on the light's properties.

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Related Experiment Videos

Last Updated: Jan 15, 2026

Measuring Light-Switching Behavior Using an Occupancy and Light Data Logger
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Measuring Light-Switching Behavior Using an Occupancy and Light Data Logger

Published on: January 16, 2020

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Building a Simple and Versatile Illumination System for Optogenetic Experiments
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Conclusions:

  • Circularly polarized light offers a direct and efficient way to manipulate ferroaxiality.
  • This research opens new avenues for light-controlled electronic materials.